Swift M3500 SERIES, Руководство пользователя

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STAGE
- the table of the microscope where the slide is placed for viewing.
This component moves upward and downward when the focusing knobs
are turned.
STAGE CLIPS - A pair of flexible metal clips attached by spring screws
that hold the slide in position on the stage.
IMPORTANT MICROSCOPY TERMS
APERTURE, ANGULAR - The angle (or cone) of light rays capable of
entering the front lens of the objective from a point in the object. By
increasing the angular aperture of an objective, more light rays from the
specimen can be taken in by the lens; hence the resolving power is
increased.
COMPOUND MICROSCOPE - a microscope having a primary magnifier (the
objective) and a second (the eyepiece) to both conduct light, amplify
magnification and convert the image into a field of view easily seen by
the human eye.
COVER GLASS - Thin glass cut in circles, rectangles or squares, for
covering the specimen, usually a thickness of 0.15 to 0. I7mm. The
majority of specimens should be protected by a cover glass, and must be
covered when using 40XRD or 100XRD objectives.
DEPTH OF FOCUS - The ability of a lens to furnish a distinct image above
and below the focal plane. Depth of focus decreases with the increase of
numerical aperture or with the increase of magnification.
DIN
– (Deutsche Industrial Norman) An international optical standard for
the manufacturing of most quality microscope lenses. Many DIN lenses
will be interchangeable from one DIN microscope to another.
FIELD OF VIEW -
the area of the object that is seen when the image is
observed. It may range in diameter from several millimeters to less than
0.1mm.
FOCAL LENGTH - parallel rays of light after refraction through a lens will
converge to a focus at the focal point. The distance from the optical
center of the lens to the focal point is the focal length.